December weather - Winter 2024 - Treasure Island, FL

Weather in December
Frequently asked questions
Average temperature in December
Average pressure in December
Average wind speed in December
Average humidity in December
Average rainfall in December
Average rainfall days in December
Average sea temperature in December
Average daylight in December
Average sunshine in December
Average sunshine days in December
Average UV index in December
Average cloud cover in December
Average visibility in December

The perfect outline of the Treasure Island in Florida

Weather in December

December, being the coolest month, presents temperatures fluctuating between 61°F (16.1°C) and 70.7°F (21.5°C). The climate in Treasure Island remains agreeable in comparison to more frigid regions of the United States. This period witnesses the least daylight hours, giving the island a softer, more gentle ambiance. Rainfall remains relatively low with about 6.5 days of showers, maintaining the trend of Florida’s dry winters. The sea too cools down substantially, marking the it as the month with the lowest sea temperatures. Yet, the wind retains its charm, blowing at an average speed of 9.5mph (15.3km/h)—adding a gentle chill in the air.

Temperature

December's onset brings an average high-temperature of a pleasant 70.7°F (21.5°C), showing a minute difference from November's 75°F (23.9°C). In Treasure Island, the average temperature during the nights of December drops to a comfortable 61°F (16.1°C).

Humidity

The most humid month is December, with an average relative humidity of 77%.

Rainfall

In December, in Treasure Island, the rain falls for 6.5 days. Throughout December, 0.67" (17mm) of precipitation is accumulated. In Treasure Island, Florida, during the entire year, the rain falls for 122.3 days and collects up to 9.45" (240mm) of precipitation.

Ocean temperature

In Treasure Island, the average seawater temperature in December is 68.5°F (20.3°C).
Note: For swimming, a surface water temperature of 68.5°F (20.3°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

Daylight

The month with the shortest days is December, with an average of 10h and 24min of daylight.
On the first day of December in Treasure Island, sunrise is at 7:05 am and sunset at 5:35 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 5:46 pm EST.

Sunshine

December has the least sunshine of the year, with an average of 6.6h of sunshine.

UV index

In Treasure Island, the average daily maximum UV index in December is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.
Note: During December, 5 as the daily maximum UV index converts into the following advice:
Act with care - The suggestion to avoid sunburn is emphasized. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.

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Frequently asked questions

What is the average December temperature in Treasure Island?

The high-temperature during December is 70.7°F (21.5°C) and the low-temperature is 61°F (16.1°C). In October, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, is calculated to be 86°F (30°C).

What is the most humid month in Treasure Island?

The most humid month in Treasure Island, Florida, is December, with an average relative humidity of 77%.

What is the average humidity in December in Treasure Island?

The average relative humidity in December in Treasure Island is 77%.

How much does it rain in Treasure Island in December?

In Treasure Island, Florida, during December, the rain falls for 6.5 days and regularly aggregates up to 0.67" (17mm) of precipitation.

How cold is the water in December in Treasure Island?

In Treasure Island, the average seawater temperature in December is 68.5°F (20.3°C). For swimming, a surface water temperature of 68.5°F (20.3°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

What is the month with the shortest days in Treasure Island?

December has the shortest days of the year in Treasure Island, Florida, with an average of 10h and 24min of daylight.

How many hours of daylight does Treasure Island have in December?

In Treasure Island, Florida, the average day length in December is 10h and 25min.

What time are sunrise and sunset in December in Treasure Island?

In December, on the first day of the month, sunrise is at 7:05 am and sunset at 5:35 pm. On the last day of the month, in Treasure Island, Florida, sunrise is at 7:21 am and sunset at 5:46 pm EST.

What is the month with the least sunshine in Treasure Island?

The month with the least sunshine in Treasure Island is December, with an average of 6.6h of sunshine.

How many hours of sunshine does Treasure Island have in December?

In Treasure Island, the average sunshine duration in December is 6.6h.

What is the UV index intensity in December in Treasure Island?

In Treasure Island, Florida, the average daily maximum UV index in December is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

75°F 23.9°C

70.7°F 21.5°C

66.7°F 19.3°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

10.6mph 17.1km/h

10.4mph 16.7km/h

10.6mph 17.1km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

5.8

6.5

5.6

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

22.5

22.6

23.1

Average UV index

Average cloud cover

26%

29%

Average visibility

6mi 9.7km

Average temperature in December
Treasure Island, FL

Average high temperature in December: 70.7°F

The warmest month (with the highest average high temperature) is August (87.8°F).
The month with the lowest average high temperature is January (66.7°F).

Average low temperature in December: 61°F

The month with the highest average low temperature is August (80.6°F).
The coldest month (with the lowest average low temperature) is January (56.3°F).

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Average pressure in December
Treasure Island, FL

Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.96"Hg).

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Average wind speed in December
Treasure Island, FL

Average wind speed in December: 9.5mph

The windiest months (with the highest average wind speed) are January and November (9.9mph).
The calmest month (with the lowest average wind speed) is July (7mph).

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Average humidity in December
Treasure Island, FL

Average humidity in December: 77%

The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in December
Treasure Island, FL

Average rainfall in December: 0.67"

The wettest month (with the highest rainfall) is August (1.85").
The driest month (with the least rainfall) is March (0.12").

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Average rainfall days in December
Treasure Island, FL

Average rainfall days in December: 6.5 days

The month with the highest number of rainy days is August (18.5 days).
The months with the least rainy days are January, February and March (5.6 days).

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Average sea temperature in December
Treasure Island, FL

Average sea temperature in December: 68.6°F

The best month for swimming (with the highest average sea temperature) is August (86.7°F).
The coldest month (with the lowest average sea temperature) is January (64°F).

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Average daylight in December /
Average sunshine in December
Treasure Island, FL

Average daylight in December: 10h and 2min

The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).

Average sunshine in December: 6h and 4min

The month with the most sunshine is May (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).

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Average sunshine days in December
Treasure Island, FL

Average sunshine days in December: 22.6 days

The month with the most sunshine days is March (24.3 days).
The month with the least sunshine days is August (5.6 days).

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Average UV index in December
Treasure Island, FL

Average UV index in December: 5

The months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is January (UV index 4).

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Average cloud cover in December
Treasure Island, FL

Average cloud cover in December: 29

The months with the most cloud cover are January and December (Cloud cover 29).
The month with the least cloud cover is May (Cloud cover 20).

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Average visibility in December
Treasure Island, FL

Average visibility in December: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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December weather forecast
Treasure Island, FL

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